题目内容
添上适当的数,使下列等式成立:
(1)2x2+x+______=2(x+______)2,
(2)3x2+2x-2=3(x+______)2-______.
(1)2x2+x+______=2(x+______)2,
(2)3x2+2x-2=3(x+______)2-______.
(1)2x2+x+
=2(x+
)2;
(2)3x2+2x-2=3(x+
)2-
.
故答案为:(1)
;
;(2)
;
1 |
8 |
1 |
4 |
(2)3x2+2x-2=3(x+
1 |
3 |
7 |
3 |
故答案为:(1)
1 |
8 |
1 |
4 |
1 |
3 |
7 |
3 |
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